绘本故事《Magic School Bus Boxset-UPS AND DOWNS漂浮与下沉》- 适合 5-7岁,8-10岁

绘本《Magic School Bus Boxset-UPS AND DOWNS漂浮与下沉》，Scholastic

绘本内容

Is there a monster living in Walker Lake? That’s what Ms.Frizzle’s class is trying to find out. The kids try to dive down
under the water, but the bus won’t go! The class has to figure out　how to turn their floater into a sinker so they can solve the　mystery of the underwater monster.　
　　Take a dive with the Magic School Bus, and learn why things　float and sink!
　　From an episode of the animated TV series produced by Scholastic　Entertainment Inc. Based on The Magic School Bus books written　by Joanna Cole and illustrated by Bruce Degen.